Seal for an auxiliary window frame and a main window sash



F. GQRELL ETAL SEAL. FORAN AUXILIARY WINDOW FRAME AND A MAIN WINDOW SASH Filed July 12, 1950 Dec. 11, 1951 l 7 Qmxmmm Z6 9 Z7 F' 6 /l V 3/ INVEN TOR. Frank Gore/l and Pef'er' D. Pozz/ Patented Dec. 11, 1951 SEAL FOR AN AUXILIARY WINDOW FRAME AND A MAIN WINDOW SASH Frank Gorell, Penn Township, Allegheny County, and Peter D. Pozzi, Heidelberg, Pa., assignors to Aluminum Fabricating Company of Pittsburgh, Pittsburgh, Pa., a corporation of Pennsylvania Application July 12, 1950, Serial No. 173,316

3 Claims. (01. 20--55) This invention relates generally to double windows and more particularly to an auxiliary window seal that not only seals its own frame, but also seals the main window sash with the main window frame.

The application of storm sash to a permanent window, whether it is applied to the inside or the outside of the window, provides a dead air space between the glazing which functions as an insulation and prevents the collection of moisture in the form of condensation. It is preferable that this air space be connected to the outside air to prevent mist from forming and to permit a very slow change of air. In the storm sash of the prior art more attention is paid to the seal between the storm sash and the permanent window sash than the seal between the permanent window sash and the permanent window frame in which it is hung. Practically every type of window constructed will in time warp to some degree and produce a leak causing a draft.

The principal object of this invention is the provision of a seal for a storm window member that not only seals itself on the permanent window but also seals the permanent sash with its own frame to stop any drafts. If the storm window is mounted on the outside of the permanent window, the storm sash may be constructed to have an independent frame and sash that can open. In a, structure of this character the auxiliary frame is sealed with the permanent window sash and the sealing member is extended to seal the permanent sash with the permanent window frame. Regardless of which side the auxiliary window is mounted, the principal feature is to The accompanying drawing shows for the purpose of exemplification without limiting the invention and claims thereto certain practical embodiments illustrating the principles of this invention wherein:

Fig. 1 is a sectional view of the auxiliary window and seal.

Fig. 2 is a view showing the structure of Fig. 1 as applied to a main or permanent window, sash and frame.

Fig. 3 is a View of a modified form of auxiliary window seal.

Fig. 4 is a view of a metal type of auxiliary seal for windows.

Referring specifically to Figs. 1 and 2 of the drawings, Fig. 1 represents the auxiliary or storm window frame which in this instance comprises an extruded member havin the spaced base members 2 and 3 and the intermediate channel member 4 which form the inner mounting face of the auxiliary window. The base member 2 forms the offset 5 with the channel 4 for receiving the sash 6 of the auxiliary window, the glass of which is indicated at 1. The glass 1 is imbedded in the soft elastomer gasket 8, contained within the groove of the sash 6. The auxiliary sash 6 may be hinged to the frame I by means of the small pin hinges as illustrated at to. These hinges may be secured to the frame I and to the sash 6 by means of the bolts or rivets indicated at H and [2. It is preferable to permit the auxiliary window member to open relative to the sash on which it is hung to provide ready access in cleaning the glass. It is not necessary in most instances to seal the auxiliary sash member with its frame, as it is desirable to have a slight amount of air filter between these members and change the air or condition the air between the two panes of glass. However, when the sash and the frame of the auxiliary window are integral then other means are usually provided to permit a slight amount of influx of air between the glazing of the auxiliary window and the main or permanent window.

The auxiliary frame is provided with the inner mounting face 2, 3 and the perimetral surface 3 forming the corner of the auxiliary window frame. The outer end of the face 3 of the auxiliary frame is provided with alateral extension I 3 that forms a slot or socket Hi. The outer end or perimetral face 9 of the extension I3 is provided with a narrow longitudinal groove l5. The seal member I6 is made of any suitable elastomer, such as natural rubber, neoprene, or other synthetic rubber, or a synthetic plastic, and likewise may be an extruded member which takes the shape illustrated. The base I! of the sealing member I 6 fits within the slot I4, and extends around the corner and has a rib I8 provided to fit within the slot [5. The balance of the elastomer member [6 is molded so that it continues the surface of the extension l3, as indicated at l9, to the extension or flexible tip or lip 26. The lip extends from the base of the elastomer member adjacent the corner of the auxiliary window. The base I! of the seal extends below the surface of the auxiliary frame I, as indicated at 2|. When the seal is applied to a sash as illustrated in Fig. 2, the flexible extension 28 seals against the frame 22 of the main or principal window and the underside 2! of the base seals against the sash 23 of the main window. Thus, the main window sash 23 is sealed relative to its frame 22 by means of the seal member I5 and no air is permitted to filter beyond or between the flexible sealing member If; and any otherparts that it engages. This closes all the air leaks themain Windows and prevents air from entering the house.

In the extruded auxiliary frame and steel sash and frame structures, as shown in Fig. 2, the seal may be extended around the 'complete. perimeter of the auxiliary frame I which extends around the perimeter of the sash member 23 of the main window. The flexible extension likewise engages the frame 22 of -the main'window for the full circumference of the opening. --'However, in some'cases it is not practical to seal parts of-the frame sash with the main frame in *which instances the flexible sealing member E is '-'continued up to such apoint, and the extension may be 'omitteduntil the-other side of the obstacle where the extension may again take up and con tinue around the perimeter of the opening. -'It is not intended to'limitthis invention to a specific structural cross-section of the auxiliary frame 1 or of the mainw'indow sash 23 or the'main window frame '22. Many modifications maybe made to reconstruct the'seal member lfi so as to be adaptable for any particular kind-or crosssection of the window structure that is-to be employed.

:Referring now to Fig.3 it will be noted that the window frame 25' is an extruded section having the base members 26 and?! with a lateral ex-- tension 23 having the downwardly open slot29 receiving" the elastomer member 36. The elastomer 3ilis somewhat similar in shape to elastomer' It. However, it completely fills the open slot 29, and when'this' memberis applied to a window sash, such'as'illustratedat 3!, the whole of the base'32 of the elastomersteel memberili seals against'the surface-of the member-ti as illustrated inFig. 3.

It is obvious from the structures as shown in Figs. 1 to'3 that, when the frame i or 25is fastened orotherwise secured to the-saslna portion of the elastomer sealmember is pressed into surface engagement with the sash for the purpose of sealing the same regardless whether the auxiliary window is on the inside or outside of the main or permanent window. Thus, when the main window sash is opened, the frames I and 25 are retained in sealing relation with the sash, but when closed the flexible extensions 26! and as of the elastomer members [6 and as provide an additional seal against the frame of the main window as previously described.

The structure, as shown in Fig. 4, discloses a main window frame member 34 mounted for operation therein a main window sash member 35 and which carries on its outer face the auxiliary frame member 36 which is secured thereto in any suitable manner. The auxiliary frame member 36 is provided with auxiliary sash member 3?, being glazed as indicated at 333 providing an air space between the auxiliary and main windows. The auxiliary frame member 36 is provided with an inturned socket 40 raised to receive and retain one end of the seal spring 4|.

which may be made of suitable flexible metal such as bronze. The inner end of the metal is secured within the seat 40, and it extends beyond the auxiliary frame 36 and is in engagement with the :main sash 35as indicated at-42. The metal seal has an upward bend 13 and then a downward bend G l, which engages the main frame as on the window to seal the same. The

double bend 42 and 44- of the flexible seal 4| is retained in sealing engagment wth the frame and sash of the main window at all times. When themain window sash 35 is opened the sealing member is carriedtherewith and may leave its surface engagement with the frame 3 on all sides exceptthat on which the hinges are posi tioned when the sash 35 is a casement window. However, if the main window structure is that of a double slidin sash then the flexible seal member merely slides along the surface of the main window frame.

'An'auxiliary window of the character'disclosed herein is preferably applied to' the exterior of the main windows constructed of woo'd or steel to protect the surface thereof from theweather and, thus, preserve the painted surface for a longer period of time. However, when applied to aluminum or stainless steel windows, "this auxiliary window functions to eliminate the collection'ef condensation on the windows and still maintain a seal for the primary windowsash with its frame.

We claim:

1. 'A window structure comprising a window sash, an auxiliary window having a mounting f acc to be secured against said window'sash for move "ment therewith, a substantially continuous slot in the perimeter of said mounting face; a' substantially continuous elastomer sealing member having a base portion fitted into saidslot and functioning as a sealing cushion when-subjected to direct compression between the auxiliary'window' and said window sash, and anunsupported continuous flexible lip extending from and integral with the base of the elastomersealing member and extending over the edge of the window sash, said lip being free to flex and seal irregularities of the window structure.

2. A window structure comprising, a-window frame defining an opening, 'a window "sash movably mounted on the frame 'to open and'close in said opening, an auxiliary window having a mounting face to be secured against said win-= dow sash for movement therewith, a substantially continuous annular slot in the perimeter of said. mounting face, a substantially continuous interlocking projection coextensive with and extendingbeyond said slot,'a continuous elastomer sealing member having mating complementary-parts fitting the slot and the interlocking projection and providing a continuous pa'd .to'function as a cushion and be compressed betweenthe-auxiliary windowand the windowsash to -seal therewith and to lock the mating complementary parts inplace, and an unsupported continuous-flexible lip integral with the elastomer sealing member and extending over the edge of the windowsash to be free-to flex and continuouslyengagethe frame and seal irregularities of the window structure.

3. A window structure comprising an? auxiliary window to be secured against a window sashfor movement therewith and having an inner mounting faceand an adjacent and outer perimetral surface defining a corner, a substantially continuous slot in said mounting face adjacent 'said corner, a second slot in said perimetral face ad- 5 '6 jacent said corner, a continuous elastomer seal REFERENCES CITED member haivmg base wlthportlqns fitting The following references are of record in the into each of said slots and covermg sa1d corner, file of this patent:

and an unsupported continuous flexible lip integral with the base of said elastomer sealing mem- 5 UNITED STATES PATENTS her and extending from said base at said corner, Number Name Date said lip being free to flex and seal irregularities 1,9'i0,055 Jorss Dec. 19, 1933 of the window structure. 2,163,566 Blessin June 20, 1939 FRANK GORELL. m FOREIGN PATENTS PETER D. PQZZI, Number Country Date 161,504 Switzerland July 1, 1933 

